Someone please help as I'm confussed. My Directv box only has outputs of digital coax (screw in type) and RCA plugs (Yellow White & Red). I want to get the highest quality audio and my Samsung Home Theater only Accepts Optical or RCA Sterio Jacks (Yellow White Red). Is there any kind of adapter I can buy to convert the digital coax (screw in type) to the Optical cable. Are there any other suggestions?